Grinder.



W. W. CHENEY.

GRINDER.

APPLICATION FILED NOV. 1. 1915.-

Patented Aug. 1, 1916.

19 TTOfl/YEY W Z i INVENTOF? WALTER W. CHENEY, OF MANLIUS, NEW YORK,ASSIGNOR TO S. CHENEY & SON, OF

MANLIUS, NEW YORK, A CORPORATION OF NEW YORK.

GRINDER.

Specification of Letters Patent.

Patented Aug. 1, 1916.

Application filed November 1, 1915. Serial No. 59,040.

T 0 all whom it may concern:

Be it known that I, WALTER WV. CHENEY, a citizen of the United States ofAmerica, and resident of Manlius, in the county of Onondaga, in theState of New York, have invented new and useful Improvements inGrinders, of which the following, taken in connection with theaccompanying drawings, is a full, clear, and exact description.

This invention relates to certain improvements in grinders, of the typedisclosed in Letters Patent of the United States to George H. Fowlernumbered 629,069, dated July 18, 1899.

The primary object of the invention is to produce a grinder of this typehaving adjustable means for accommodating the same for grinding mowingmachine cutter bars of various lengths, and for varying the angle atwhich said bar is supported relative to the grinding wheel.

Other objects relate to improvements in details of construction andoperation, as will appear from the following description taken inconnection with the accompanying drawings, in which Figure 1 is a topplan View of the grinder. Fig. 2 is a side elevation, partly in section,of the same. Fig. 3 is a central vertical sectional View of the grinder.

The invention comprises an uprightpost -lcarrying a stub shaft 2 uponwhich is rotarily mounted a relatively large gear wheel 3 adapted tomesh with a relatively small gear wheel 4- mounted upon a shaft -5-journaled in a bearing -6 supported on the post 1. The gear wheel -3 isprovided with a handle -7 for rotating the same, whereby the gear wheel4 is reversely rotated at a relatively high rate of speed. The post 1also carries a ball 8 having a transverse passage. The ball 8 is adaptedto fit into a split, substantially spherical socket formed by twoseparate members 9 and 10 secured to each other and to the ball by bolt-11 passed through said members and through the opening in the ball, andprovided with a suitable locking nut 12.

A suitable platform 13 is secured tothe ends of the members 9- and l0 bybolts 14. and 15, the platform being similar to that shown in the patentrelative to the bearing 6.

above identified and adapted to fit and be secured to the wheel of amowing machine or any suitable bench or table.

The shaft 5 projects inwardly some distance from the post 1- and hasjournaled thereon a suitable grinding wheel l(3 of emery or otherdesirable material, and upon the intermediate portion of the platforml3- and adjacent the grinding wheel -16 a suitable bracket 17 ismounted, adapted to carry a movable knife rest 18. The opposite ends ofthe platform -13 are provided with openings -19] for the reception ofoneend of a suitable supplemental knife support -20 hav ing its end 21-bent in such shape that when engaged with the openings 19, the kniferest is inclined upwardly at an angle to the platform -13. The oppositeend 22 of rest 20' isbent in the form of a loop adapted to receive andhold the cutter bar. The rest 20 is formed of two parallel extendingmembers 23 and 24 in this specific illustration of substantially equallength, the member 23 having its end portion 21 adapted to engage theopenings --19, and the member 2 lhaving its end formed in the loo-p 22.The oppositely disposed ends of members -23 and 24 are threaded forengagement with internally threaded openings in suitable clips 25, theintermediate portion of such bars being slidably passed through the clipwith which the other bar has a threaded relation, and a suitable setscrew 26--- is provided in connection with one of said clips foradjustably holding the clip in fixed position with respect to the barwith which it has a slidable relation.

The device embodies also a tool rest 27 having a substantiallysemi-circular hub 28- mounted upon bearing 6- and provided with a setscrew 29 for looking it in any desired position of adjustment The toolrest comprises a finger 30 extending substantially parallel with theaxis of the grinding wheel -16- and spaced a short distance therefrom,and this finger forms a rest for the tool.

In operation, the cutter bar may rest at spaced points upon the pivotedknife sup port 18 and the loop 22 upon the supplemental knife barsupport. The operator can then manipulate the knives with one hand Whileturning the gear 3 by handle 7 with the other hand.

In order that the knives may be supported at the prpe1-position withrespect to grinding wheel l( and for the purpose of adapting the deviceparticularly to knife bars of various lengths, the supplementary knifesupport is, as shown and described, inclined upwardly with respect tothe plane of the platform -13, and by adjusting the two parts 23 and 24.of the support relative to each other the dis tance between the kniferest 18 and the loop -22 may be varied and automatically with thevariance of the spaced distance of the said two members the angle atwhich the cutter bar is supported islikewise varied, due to theinclination of the supplemental knife bar support.

Although I have shown and described one particular construction andmethod of ac complishing the objects herein described, I do not desireto limit myself to the same, as

" many changes may be made in the details of construction, arrangementand operation without departing from the spirit of this invention as setforth in the appended claims.

Vhat I claim is 1. In a grinder, a grinding wheel, means for rotatingthe same, a platform, a longi tudinally adjustable supplemental knifebar support mounted on said platform and inclined upwardly at an angleto said platform, and means for holding said support in any desiredposition of adjustment.

2. In a grinder, a grinding wheel, means for rotating the same, apivoted knife support adjacent the grinding wheel, and a supplementalknife bar rest having a knife receiving portion, and means for varyingthe distance between the knife bar rest and the receiving portion ofsaid supplemental knife bar support.

3. In a grinder, a grinding wheel, a platform, a knife support pivotallymounted on the platform, and a longitudinally adjustable supplementalknife rest mounted upon one end of said platform.

4.. In a grinder, a grinding wheel, a platform, a knife supportpivotally mounted on the platform, a longitudinally adjustablesupplemental knife rest mounted upon one end of said platform andinclined at an angle to the plane of said platform.

In witness whereof I have hereunto set my hand this th day of October,1915.

IV ALTER W. CHENEY.

lVitnesses:

ETI-IEL E. A. TEMPLAR, F. F. CURTIS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

